My observatory is 20 metres away from my house. What i want to do is extend the SynScan hand controller lead by 20 metres so that I can control my new scope from the house using only the SynScan hand controller. I already have cables (USB) in situ for my other telescope, Celeron CPC 800. This I can already connect to my PC and control using Stellarium.

I can obtain a purpose made 20 metre D-Sub 9 male connector to 8 pin RJ-45 lead from a supplier I have used many times before, but, he needs to know the pin schematics for both the D-sub 9 male and the RJ-45 connectors. Can anyone direct me to a website/resource where I can get the relevant schematic pin layout information from? I can see schematic details for the RJ-45 in the SynScan instruction manual,(well I assume it is for the RJ-45 connector), but there are no pin schematics for the D-sub 9 male connector.

Any help would be much appreciated

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